netdev - [PATCH net 1/3] ice: Fix DSCP PFC TLV creation

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Message-Id: <20230307220714.3997294-2-anthony.l.nguyen@intel.com>
Date:   Tue,  7 Mar 2023 14:07:12 -0800
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com, netdev@...r.kernel.org
Cc:     Dave Ertman <david.m.ertman@...el.com>, anthony.l.nguyen@...el.com,
        Karen Ostrowska <karen.ostrowska@...el.com>,
        Gurucharan G <gurucharanx.g@...el.com>
Subject: [PATCH net 1/3] ice: Fix DSCP PFC TLV creation

From: Dave Ertman <david.m.ertman@...el.com>

When creating the TLV to send to the FW for configuring DSCP mode PFC,the
PFCENABLE field was being masked with a 4 bit mask (0xF), but this is an 8
bit bitmask for enabled classes for PFC.  This means that traffic classes
4-7 could not be enabled for PFC.

Remove the mask completely, as it is not necessary, as we are assigning 8
bits to an 8 bit field.

Fixes: 2a87bd73e50d ("ice: Add DSCP support")
Signed-off-by: Dave Ertman <david.m.ertman@...el.com>
Signed-off-by: Karen Ostrowska <karen.ostrowska@...el.com>
Tested-by: Gurucharan G <gurucharanx.g@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_dcb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_dcb.c b/drivers/net/ethernet/intel/ice/ice_dcb.c
index c557dfc50aad..396e555023aa 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb.c
@@ -1411,7 +1411,7 @@ ice_add_dscp_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
 	tlv->ouisubtype = htonl(ouisubtype);
 
 	buf[0] = dcbcfg->pfc.pfccap & 0xF;
-	buf[1] = dcbcfg->pfc.pfcena & 0xF;
+	buf[1] = dcbcfg->pfc.pfcena;
 }
 
 /**
-- 
2.38.1